Cystic fibrosis is a genetic disease caused by a recessive allele.  Two parents without the disease have a child with the disease, indicating they are both heterozygotes.  Assuming that the child did not have a mutation giving it the disease, what is the probability that a second child of the same parents would have the disease?  Group of answer choices a. 1 b. 0.25 c. 0 d. 0.5

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Immune Disorders

The collaboration between the cells and proteins that work together as a defense system against infection comprises the immune system.Each of them performs a variety of tasks to recognize and/or react against a foreign body.